feat: override variables with environment variables

3 files changed, 47 insertions, 47 deletions

diff --git a/functions.sh b/functions.sh
index 0468b29..163c0a2 100644
--- a/functions.sh
+++ b/functions.sh
@@ -1,24 +1,24 @@
 #!/bin/sh
 
-media_dir="media"
-src_dir="src"
-tmp_dir="tmp"
-out_dir="out"
-
-tmp_file="${tmp_dir}/tmp"
-rss_dir="${src_dir}/b"
-rss_out_file="${out_dir}/rss.xml"
-
-website_domain="rgoncalves.se"
-website_title="${website_domain}"
-website_link="https://${website_domain}"
-website_email="contact@${website_domain}"
-website_generator="${website_domain}'s ssg"
-website_description="devops and hacker D:"
-website_language="en"
-
-date_default_hour="17:00:00"
-date_default_timezone="+0200"
+SSG_MEDIA_DIR="${SSG_MEDIA_DIR:-media}"
+SSG_SRC_DIR="${SSG_SRC_DIR:-src}"
+SSG_TMP_DIR="${SSG_TMP_DIR:-tmp}"
+SSG_OUT_DIR="${SSG_OUT_DIR:-out}"
+
+SSG_TMP_FILE="${SSG_TMP_DIR}/tmp"
+SSG_RSS_DIR="${SSG_SRC_DIR}/b"
+SSG_RSS_OUT_FILE="${SSG_OUT_DIR}/rss.xml"
+
+SSG_WEBSITE_DOMAIN="${SSG_WEBSITE_DOMAIN:-example.org}"
+SSG_WEBSITE_TITLE="${SSG_WEBSITE_TITLE:-Example}"
+SSG_WEBSITE_LINK="${SSG_WEBSITE_LINK:-https://${SSG_WEBSITE_DOMAIN}}"
+SSG_WEBSITE_EMAIL="${SSG_WEBSITE_EMAIL:-contact@${SSG_WEBSITE_DOMAIN}}"
+SSG_WEBSITE_GENERATOR="${SSG_WEBSITE_GENERATOR:-${SSG_WEBSITE_DOMAIN} ssg}}"
+SSG_WEBSITE_DESCRIPTION="${SSG_WEBSITE_DESCRIPTION:-example}"
+SSG_WEBSITE_LANGUAGE="${SSG_WEBSITE_LANGUAGE:-en}"
+
+SSG_DATE_DEFAULT_HOUR="${SSG_DATE_DEFAULT_HOUR:-17:00:00}"
+SSG_DATE_DEFAULT_TIMEZONE="${SSG_DATE_DEFAULT_TIMEZONE:-+0200}"
 
 uname=$(uname)
 
@@ -85,7 +85,7 @@ __get_value_date_publication() {
 	local _date
 
 	_date="$(__get_value_date ${1})"
-	_date="${_date} ${date_default_hour} ${date_default_timezone}"
+	_date="${_date} ${SSG_DATE_DEFAULT_HOUR} ${SSG_DATE_DEFAULT_TIMEZONE}"
 
 	if [ "${uname}" = "Linux" ]; then
 		date -d "${_date}" +"%a, %d %b %Y %H:%M:%S %z"
@@ -107,7 +107,7 @@ __get_out_filename() {
 	
 	echo "${_filename}" |
 		sed 's/.md$/.html/g' |
-		sed "s/${src_dir}/${out_dir}/g"
+		sed "s/${SSG_SRC_DIR}/${SSG_OUT_DIR}/g"
 }
 
 __get_final_filename() {
@@ -129,7 +129,7 @@ __list_files_date() {
 	local _tmp_file
 	
 	_files=$(__list_files "${1}")
-	_tmp_file="${tmp_file}.list_files_date"
+	_tmp_file="${SSG_TMP_FILE}.list_files_date"
 
 	cp /dev/null "${_tmp_file}"
 
@@ -188,7 +188,7 @@ __generate_index() {
 	local _file
 	local _index_dir
 
-	_index_dir="${src_dir}/$(__get_value "${1}" index)"
+	_index_dir="${SSG_SRC_DIR}/$(__get_value "${1}" index)"
 	[ -f "${_index_dir}" ] && _index_dir=$(dirname "${_index_dir}")
 	[ ! -d "${_index_dir}" ] && return
 
@@ -229,18 +229,18 @@ __generate_metadata() {
 __handle_md() {
 	# 1: filename
 	# Handle markdown files.
-	__lowdown "${1}" > "${tmp_file}.body"
+	__lowdown "${1}" > "${SSG_TMP_FILE}.body"
 
-	__generate_metadata "${1}" > "${tmp_file}.metadata"
+	__generate_metadata "${1}" > "${SSG_TMP_FILE}.metadata"
 
 	if [ ! "$(__get_value "${1}" index)" = "" ]; then
-		__generate_index "${1}" > "${tmp_file}.index"
+		__generate_index "${1}" > "${SSG_TMP_FILE}.index"
 	else
-		[ -f "${tmp_file}.index" ] && rm "${tmp_file}.index"
+		[ -f "${SSG_TMP_FILE}.index" ] && rm "${SSG_TMP_FILE}.index"
 	fi
 
-	__apply_template "$(__get_value "${1}" template)" > "${tmp_file}"
-	__install "${tmp_file}" "$(__get_out_filename "${1}")"
+	__apply_template "$(__get_value "${1}" template)" > "${SSG_TMP_FILE}"
+	__install "${SSG_TMP_FILE}" "$(__get_out_filename "${1}")"
 }
 
 __handle() {
diff --git a/rssg b/rssg
index 16fdd2b..b292eb8 100755
--- a/rssg
+++ b/rssg
@@ -6,32 +6,32 @@ set -e
 
 current_date=$(date +"%a, %d %b %Y %H:%M:%S %z")
 
-cat <<-EOF > "${rss_out_file}"
+cat <<-EOF > "${SSG_RSS_OUT_FILE}"
 <rss version="2.0">
 <channel>
-<title>${website_title}</title>
-<description>${website_description}</description>
-<link>${website_link}</link>
-<copyright>$(date +"%Y") ${website_title} - All rights reserved</copyright>
-<managingEditor>${website_email}</managingEditor>
-<webMaster>${website_email}</webMaster>
+<title>${SSG_WEBSITE_TITLE}</title>
+<description>${SSG_WEBSITE_DESCRIPTION}</description>
+<link>${SSG_WEBSITE_LINK}</link>
+<copyright>$(date +"%Y") ${SSG_WEBSITE_TITLE} - All rights reserved</copyright>
+<managingEditor>${SSG_WEBSITE_EMAIL}</managingEditor>
+<webMaster>${SSG_WEBSITE_EMAIL}</webMaster>
 <lastBuildDate>${current_date}</lastBuildDate>
 <pubDate>${current_date}</pubDate>
-<generator>${website_generator}</generator>
-<language>${website_language}</language>
+<generator>${SSG_WEBSITE_GENERATOR}</generator>
+<language>${SSG_WEBSITE_LANGUAGE}</language>
 <docs>https://validator.w3.org/feed/docs/rss2.html</docs>
 <ttl>1800</ttl>
 EOF
 
-for file in $(__list_files_date "${rss_dir}"); do
+for file in $(__list_files_date "${SSG_RSS_DIR}"); do
 	__get_value "${file}" "draft" >/dev/null && continue
 
 	title=$(__get_value_title "${file}")
 	date=$(__get_value_date_publication "${file}")
-	link="${website_link}/$(__get_final_filename "${file}")"
+	link="${SSG_WEBSITE_LINK}/$(__get_final_filename "${file}")"
 	guid="$(echo "${link}" | "${__sha256}" | cut -d ' ' -f 1)"
 	description=$(__generate_rss_body "${file}")
-	cat <<-EOF >> "${rss_out_file}"
+	cat <<-EOF >> "${SSG_RSS_OUT_FILE}"
 	<item>
 	<title>${title}</title>
 	<link>${link}</link>
@@ -42,7 +42,7 @@ for file in $(__list_files_date "${rss_dir}"); do
 	EOF
 done
 
-cat <<-EOF >> "${rss_out_file}"
+cat <<-EOF >> "${SSG_RSS_OUT_FILE}"
 </channel>
 </rss>
 EOF
diff --git a/ssg b/ssg
index 9eb9c4b..07a525c 100755
--- a/ssg
+++ b/ssg
@@ -6,11 +6,11 @@
 set -xe
 
 media_branch="media"
-src_files="$(__list_files ${src_dir})"
-dirs="${media_dir} \
-	${src_dir} \
-	${tmp_dir} \
-	${out_dir}"
+src_files="$(__list_files ${SSG_SRC_DIR})"
+dirs="${SSG_MEDIA_DIR} \
+	${SSG_SRC_DIR} \
+	${SSG_TMP_DIR} \
+	${SSG_OUT_DIR}"
 
 # Ensure directories exist.
 for dir in ${dirs}; do